US2868992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor viewing apparatus
Assignee: Individual
•
Filing: 1945-02-12
•
Granted: 1959-01-13
•
Expires: 1965-02-12
Abstract
No abstract record available.
Inventors
- 👤 George S Monk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:17
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/08; G21C19/00; G21C19/14; G21F; G21F7/00; G21F7/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A RADIATION ABSORBING OPTICAL SYSTEM FOR VIEWING RADIOACTIVE OBJECTS COMPRISING A VIEWING TUBE FLANGED AT EACH END, A LENS AT ONE FLANGED END OF SAID TUBE, SAID LENS BEING MADE OF A POLYMERIZED ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, STYRENE, CYCLOHEXYL METHACRYLATE AND MIXTURES THEREOF, MEANS FOR MAINTAINING SAID LENS IN LIQUID-TIGHT CONTACT WITH SAID FLANGED END OF THE TUBE, A RADIATION ABSORBENT LIGHT TRANSPARENT SOLID MEMBER AT THE OPPOSITE FLANGED END OF SAID TUBE, MEANS FOR MAINTAINING SAID TRANSPARENT
Claim 2
Dependent Claim
84 words
A RADIATION ABSORBING OPTICAL SYSTEM FOR VIEWING RADIOACTIVE OBJECTS COMPRISING A VIEWING TUBE FLANGED AT EACH END, A LENS AT ONE FLANGED END OF SAID TUBE, SAID LENS BEING MADE OF A POLYMERIZED ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, STYRENE, CYCLOHEXYL METHACRYLATE AND MIXTURES THEREOF, MEANS FOR MAINTAINING SAID LENS IN LIQUID-TIGHT CONTACT WITH SAID FLANGED END OF THE TUBE, A RADIATION ABSORBENT LIGHT TRANSPARENT SOLID MEMBER AT THE OPPOSITE FLANGED END OF SAID TUBE, MEANS FOR MAINTAINING SAID TRANSPARENT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |